#include <stdio.h>

/**
 * 嵌套 for 循环打印九九乘法表
 */
int main() {

	for (int i = 1; i <= 9; i++) {
		for (int j = 1; j <= i; j++) {
			printf("%d * %d = %d\t", j, i, (i * j));
		}
		printf("\n");
	}

}